常見例句雙語例句It is obtained by distilling soft pitch in flash column under certain pressure and temperature .中溫瀝青經(jīng)過在一定的壓力和溫度下進(jìn)行閃蒸獲得。www.koppers-china.comIt is obtained by distilling soft pitch in modified pitch column under certain pressure and temperature after certain time heating.中溫瀝青經(jīng)過在一定的壓力和溫度下，經(jīng)過一定時(shí)間熱處理獲得。 返回 distilling column